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习题练习:Physics Unit11: Vibrations and Waves

 作者: physics 发布日期: 2022-08-06 21:32   总分: 99分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月06日 21:32  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The time for one cycle of a periodic proc*)r(av lf kxv,ess is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of cycl7u/aqch6c 2qa/ ds9yh7hn km4ia -+i 2nhc -xoes per unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the equilibrium point is c)ub9wipdjwg z ,gh4/5alled uj4,w zp9w g)id/h 5gbthe

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergor x*vi5:d.n5)pz akvles SHM. When the mass is at its maximum displacement from equilibrium, its inst p x5)lznav :*.d5rvkiantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoeu qn9.3 thpf-u:glis )q jf77ns SHM. When the mass passes through the equilibrium position,.ul -)gsj 3nh9f7qfti :qpnu7 its instantaneous velocity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When thei ,e. kz/ie*:hj-d j: bbhv5gh mass is at maximum displacement from equilibrium, its insta -high5.biebej:: /jv*h z,k dntaneous acceleration

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a v:/kiz7 tfl,rzertical spring and bobs up and down between points A and B. Where is the mass located when it,7/fz:lktzi rs kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring anlq3zi; l p60odd bobs up and down between points A and B. Wh30;ldlp6z oiqere is the mass located when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and 50.o spr hmd8bbobs up and down between points A and B. rm 08hbs pod5.Where is the mass located when its potential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a ver*fz . c 9lj5c icqo:x/(cd((pu/wjg vvtical spring and bobs up and down between points A and B. Where is the mass located whe pj(*5lqvc(( vc/uw:cd/oicj.9gxz f n its potential energy is a maximum?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the amplitude of a vibrating mass-and-spring system prod5nyer l*5vz6c uces what effect on the system's mechanical e5l* n cez6vy5rnergy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a viboe)5op a nu 9x-*a.3pfip aln.rating mass-and-spring system produces what effect on the system's mechanical energy paapf3)9p.na -o5 nuxo.e*i l?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring constant of a vibrating7 3atl2c7 d uwe* p8ikolo xs--5(ynnd mass-and-spring system produces what 8 a nse73wx *ntl72poc - 5dikodly-u(effect on the system's mechanical energy?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the end of a spring, both,4nv-0azqsr d on Earth and on the Moon. Where is the period the greate 0sdqra,-vnz4st?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k of a ma 0uxu . l//aeh 9uk);yb fx6kl*g2gwgfss-and-spring system causes what kind of change in the resonant frequency of ggawhe/kfxlgu9fuyx6l0*b ;2u /) .k the system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-spring sypni :ib)l2s e:c- bz1takl3 f;b k80+fgk8wt mstem causes what kind of change in thimkfbstkli:t lf;: c a38)b2 kng 0 b+1zpew8-e resonant frequency of the system? (Assume no change in the system's spring constant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of a mass-aiq.q/+u npl+ps( 0 izynd-spring system causes what kind of change in the r+( py/ szq0+u.pqlniiesonant frequency of the system? (Assume no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a mass M attached to a weightless string of lengtv(p(+ xx:t 1n ezk7klbh L. For this system, when undergoing small oscitn1 (+ke7blzxvpk x:( llations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the k 9a 0x5jj z5l+tfs:dgtime required for one complete vibrationk jx9zj l f0:st+5gd5a

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The*gw ib(b c+n gveq4v.; period of A is T. Pendulum A is twice as heacib;w g*+gve bvnq.4 (vy as pendulum B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is tripled, the time yj 4d//xqn. nvfor one complete vibration incr4 .vqnxnjd//yeases by a factor of

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to a simple pendulum's fremr)):8 cwwcndtid3 v3dg;bb 5 mt7wf 7quency if both its length and mass are increas8dwmwvf7n; d)3icg 37mtb w5r: d)tcbed?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swings back and forth at twice theku+ pj2u9 zt9 nkp6fq2suw0sih +*4z s frequency of simple pendulum B. Which j*u0kuz2ksfw 9+u 4pis sz+ 9h6 p2tnqstatement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the acceleration of grdlyrqj bu 2,6fiy3)j+ avity is less than on Earth, the resonant frequency)6+y lfid3 rqj j,u2yb of the pendulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 : ;zc o.hdt,pzrepresents


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve B in Fig. 11-1 represe;qz 36) dqffglnts


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve C in Fig. 11-1 represen or,7d oj99 .ykqs5drkts


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration, the amplitude of vibration is found to depend on thi /+x+)dw rflft 2)uvtdri7v +e

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of 3puwj y((3yld points of the wave from equilibrium is called t((y y33 luwdpjhe wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests on a wave is called n6 m7v;bff5w xw;mrs0 the wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave fgwgt )0ru) .onxq9gq)o q9n ,passing a point per unit time is called the wave'sqg) )nu q9o)qfrg9gwx,nt o.0

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times the wavelen, nsmn2v4/ zh zd;1jh 0w)8/+u sxrbmwrec.r kgth is the wave's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. What happens to the dibkd5j o pyhrs0b*(/s 8stance between successive crests if th0 s(/bkho j58bysrd p*e speed remains constant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a string with wavelength l anb u)ctl x:0b,s arf9y-d frequency f. A second wave on the same sx)tcs9l,fy-bbu r :a 0tring has wavelength 2l and travels with the same velocity. What is the frequency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of length L, mass M, and tension T6z/+0 o v hd+ x:yv0d7acsehub. A stazyov7 ce6:00 ad+huxdsbv h +/nding wave is set up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under)ieb lq ,fs/-p tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the mass of the string is incre-, /qe)ibfpls ased to 2m, with no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is undel-;d7v9ihoer u fw ;lo3i-m7rqw:l; tr tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the length is increased to 2L,i9- w ft-mi w7uvr 7o;ll;;3:dehoq lr with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension Tnx92fo;e*r ptbxlv ) 3qo7--p)pv vlg. The speed of a wave in the string vrp)vx eqpv3pnlo-*ol2)7xbtf; 9g - is v. What will be the speed of a wave in the string if the tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. As an S w-k/ (d-uen yfxave travels through the Earth, the relative motion betwn keu yd/xf-(-een the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a.u;cm*v b;u gr P wave travels through the Earth, the relatir uc;uvm .gb;*ve motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wyf(.k1qh;u1rn /ehr7wl q5smave is

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveling to the lc-y.k 2x45rj nxlak ;right along a thin cord reaches a discontinuity where thyx ;.kl2 lra4nxk5-jc e rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with:o 1 -eu:auwo/2fz4 q)cvq* pziw5zmy equal positive amplitudes pass each other on a string, one is traveling toward the right and the other toward the-iz mcaq z*wz42 f/q)5o: uvy:1owupe left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one tr4xm6b g 92gpplaveling toward the right has a positive amplitude, while the one traveling towarxp6mg 92p 4lgbd the left has an equal amplitude in the negative direction. At the point that they occupy the same region of space at the same time

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a system, such as a string fixed a0o7yseu1 xxu*.ocou msnu842 t both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundame nj;xz8qg a7oy cusb,/55cs3v1q 2qpwntal frequency of that string will increase by a factorc; j583 uxybos vz g,7nqp2/1asq5wcq of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a sprj)v4r 41 ophgpsyebs3 z1nn;,ing that stretches 2.00 cm when a mass of 0.600v3jpszrb ;yeng4 n,1 1pos4h) kg is suspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached t l6zd 1eunnq.-o a spring of spring constant 60 N/m along a horizontal, frictionless surface. The spri.nn1ez6q ldu -ng is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the amplitude?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constankh+ 1,) ph n*h-swjkwit 60 N/m along a horizontal, frictionless surface. The sprinwn*k )1p+h,ikh -jhws g is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along aj9r 1iu,i(ifp horizontal, frictionless surface. The spring is ,ip 91(ufjiri initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the frequency of oscillation?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes Sh9 li0 l0p,dbfHM. It goes through 10 complete oscillations in 5.0 s. What is the periodp0l hil09,f db?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal,- h9g0vs airyduqiz*ep 6xi*x 8 ),d1gase h+ spring of spring conidps 0a8shr1)6 ih+xxai,vuee *gzy 9- d*q,gstant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/r:u9o sy: -e4ry6ghfu tz+z 9qm along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. W9g: zyy-zu9 h4frqst:uoe r6+hat is the total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. The energy is 8.0 J at5o:fgkikgci7 v80h2f-fpl :s this time. The mass is cut in half, and sff g7g2 5:lv kohc0i i-8kpf:the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constk 0 o/ ,siltbv22bm6tsant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude2,o / t vlbstk60sbm2i of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of sprinm45dp gc1mk 7ng constant 20 N/m along a horizontal, frictionless surface. mckpg41d n57 m The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizo0lk*+hr w w hpco1-eg1ntal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What epr 0cowl1- kh1h*+wgis the total mechanical energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to thv3 mak5b kg1 c,tj,.hyw-e2 ng xfg1p-e end of a horizontal spring of spring constant 50 N/mh5fnk1 g 1c w t- g-.xa2m3ypk,bejg,v and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth p4.rg rvqq*aw:b 7.govf1 tyq-i1fx/from the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating mass?v./ :qfqvar- ywx7rtofipq gg14 b1 .*

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring system is disi3:v 5b urfhfes08n4dplaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced onlifer:8 3n5ud b4v0 fhsy 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spwjo8zdjz56.p th/ n i2h5:) ojd/asd xring of spring constant 10 N/m. The object is d.z/5oazht/6d:o h5d)id x 8jwjj2s pnisplaced by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant x;bx uai 2ws(110 N/m. The object iubxxwa ;21 (sis displaced by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hung from hx; kd-r:p+1jx +mfrma spring of spring constant 18 N/m, displaced slightly from its equilibrium posi:1fh rkx;pr m+j-xd+ mtion, and released. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at a frequency of 1.27 mm ;xjt7d07j+d 1gol -h+ jotsHz when displaced a distance of 2.0 cm from equilibrium and released. What is thmdjg-jt+oo sdml77 ;xth+ 0 1je maximum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are attr pqardnk6h;dkd-8 *- ached to different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency dq6d nr ap*8k d-k;r-hof 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is sun1vl *+mgl(6 hg p9zlnspended on a spring. In equilibrium the mass stretches the spring 2.0 cm downwl n( *1m v69+lnghzgplard. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on f h. :4bq/,pw(pi jcxfa spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm downj,h4/ ffpic.(qbp w: x and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In eql v ,py 2,vmrbem5d 3/hnf5;pa(7q ixduilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down itpvl y5m hd f ni,3;bxd 5rvm7qp2,(/eas equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the follj ujv;de 2-pbzu93qs10h6y dcowing position versus time equatiocu0zdyjb de3vup -9jh sq1;26n:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the amplitude of vibration?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic moti4zsddo5.q h ed)am9 ,won obeys the following position versus time equatiw9zoq ea),md 5sdd .h4on:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the period of vibration?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following position versus l7:vf s0 ,u;zh. olfpwyji21atime equation7l;ijuf zs.,ap2ylv o0wh:f 1:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the maximum speed of the object?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass attached to the free end of a spring exe1 )shn4f(hgz w;bvz r7cutes simple harmonic motion according to the g( nbrhw zzf);h4s71vequation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached ty6ho- sx:bw2po spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.sx2p: o bw6-hy0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. m;r 4,ou( lvbk (a) What are its frequency and period on Ebv, 4krm( l;ouarth?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m losh0zkj+0eeq7. n,6q a xv3netyv8 ,pong. What is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth. What is;roi6 7 +4n) ytbuwkr r01uqic its length?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clock is 19;kycxn/ u s rz) p6thi s*b2ucy8(jzk,4i7fz.0 m long. What is its period on the Eaz s7 jui z8hy/6nfr4,s)cp(x*kicy t9b 2kuz;rth?

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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a graop/3s,g9 dpkv+w ezz+azb9u:ip g3 :bndfather clock is 1.0 m long. What is its period on the Moon where the acceleratio3 sp/g +egzwdop+uz9k:9 ibz3p:,vban due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.25-kg spherical mass attached to a massf95pwnu 3uxoje*8 q d*less string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency wouloxf pue8 qw9j53*und* d have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial angula1- 9b v7eidnjk3.ay; og3 m oi-mq6dkbr displacement of 8.0e. It oscillates w 9y. i3;m6o 3kvi-qkea-o7b1mngj d dbith a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. Thec5je *o2 8yo9u;3 zuelgbm5te frequency of the wave is 120 Hz. What is thebe3u2*je;8l my z9cg 5ueto5 o amplitude?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The 1nf*b h3xjqpm q* ea496qkvw7frequency of the wave is 120 Hz. What is the wavel6eqq 4 wa npb*f1 kh7mv9jx*3qength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. ,)km i1)4byr hw rf( etr hc.g7yj1;xy The frequency of the wave is 120 Hz. What is the wave speedkx 4;7ryw i y1c.h) h) b1(grtjrf,mye?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave which has a period oi 50hth2linr8 f 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of a wave with a frequency (k(jgqnb5;gu-*x 0 6szqsbpt of 1500 Hz?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wave spef7 ey .33dkretafk0 1fjlo8 znw7 d8-ved if a wave has a frequency of 12 Hz and a wavelength of 3.0 m?ev18 jk0 knfy7r 7l 33at wd8fzd.-oef

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the velocity of a wave that has a wavelength of ,kh(*he0 zpzde: ;d.1dqu dgy 3.0 m and a frequency of 1q 1;d*(d0 : d hpke.hz,dzugye2 Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5 m wave zs8 ,kn5fq0r4f)xvjqtraveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/ml*ip z q3wws:s(j-89ankr(yc is under a tension of 1350 N. Whayiszw9k:(s j*a3 lr (8w n-cqpt is the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is undelb2:js 2-f8k g,e- zxpm n2bywr a tension of 180 N. What is the velocity of propagation ox: -kjpbyw f2g,n-s e lz82b2mf transverse waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m ibw:dl66o9izkcf2 3q ss traveling down a 500 m long wire whose total mass iq:sw9z 6if d 3klcb6o2s
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a transverse wave on a 2.0-m long sh 6(z5a7 qv)i 9xjglcytring fixed at both ends is 200 m/s. Which one of the following is not v)iq7a5 9c 6y j(gzxlha resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a fundamental frequency of 500 Hz, which one of the foll/ uv3ctxnfmowt/ s8*c + s4w+pow++t wucsm3/ nvs* opwx/t 8cf4ing frequencies can set the string into resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is observed *jx2q8 m5q3oqi z:g3*cjdxx qto have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with f3 85*:odxq2iz m xxqjjq*g3c qive equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates at a frequency of 12 Hz with a sta 0bv4:q ni )g1bdoftne:)ap.nz.*todnding transverse wave pattern containing 3.f*1 d 4g tzp ebtn.a :v:0nnb)o)iodq loops. What frequency is needed if the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m is under a tebd ; vd)9m0pqv/4qt kjnsion of 20 N. What should its length be if its fundamenta d;)vdm pbt0k49 /jqqvl resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear mass density 2.005vc2oak pp (tw0;wkz9xv0lh; g/m and length 0.600 m when it is subjected to xa(2;0l9;5ptkvhkwz0 wp ovc tension of 50.0 N.

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99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2.5 m is fixed at both enqqh 9h5b3u spt3.;.wxssw y l9ds. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is form tby9qh;plw5 s3. uwhssx.9 3qed.
(a) Determine the distance between two adjacent nodes.
(b) Determine the wavelength of the waves that travel on the string.
(c) Determine the velocity of waves.
(d) Determine the fundamental frequency of this string.
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